Tracker-board.



Unifrnn einiges tense onion@ EAPR( PIERCE, OF KANSAS CITY, MISSOURI, ASSlGNOROF-ONE-HALF TO FRANK QBRIGJGS;

solidez. I.

rgiiril application led September 6, 1907, Serial No. 391,653. Divided and this application filed November 18, 1907i` Serial No. 402.716. f

To uil 'whom 'it vmay concern.:

Be it known that l, HARRY PiEncE,`citizcn of the United States, residing at Kansas (ity, in the county of Jackson sind State of Missouri, have invent-cd certain new und useful improvements in 'l`riicker-Boa.rds, of which the following is a speciliciition.

This invention relates .topneuinaticnlly actuated musical instrument of that. type tlisi. are operated under the conti-ol of speciaiy devised niusic sheets mounted to pass over a tra-cker ril-nge or boord, and the presont invention relates to a novel construction of trackenlioiird, the present case being a division of my zip ilictitioii tiled September 6th, 1907, for vai-ive systeiiis and trackei`- boards, Serial No. 391,653.

For o. full'understiinding of the invention, rer-rence isto be had to the following description and accompanying drawings, in which: l,

Figure. l is li face View of a. portion of `the trseker-boiird construct-ed in accordance with n j; invent-ion; Fig. 2. is :i transverse sec-y tional 'view in the iiiituro of :i diagram, illus traing my improved vulve. system :ibove mentioned, in connection with the trackerboard; und, Fig. 3` is :i View of :i )tiriioiiiif the perforated music sheet designed specially for my improved trucker-board.

Corresponding :ind like pin-ts are referred to in the followiiipr description and indicated in :all the, views of the drziiiings by the same reference cheracters.

.En order that thc'operiit-ion of my improved t-i'iu-ker-binird iiiziy bc fullyT understood, l slmllflescribe itl iii relation to the vsie .system which forms the, bnsis of my fermer application above mentioned, and referring to the drawings, the letter T designates my improved traclier-bmird or range., :across which the\pcrt`orated music roll or primary vacuum chest. of the. ordinary donlile :iction pneumatic player,k and S the secondary iiiicuuin" k.chest thereof, arrsnged in accordance with the principles of this invention; und A designates the addi- "eigiiisl or auxiliary viicuuui chest which reni dssthc theme emphasizing cllects possible.'

Thetracker-bourd 'l is provided with the nsnzxi longitudinally extending or elongated :n.:rs Leuclroi which is connect-ed by :i flexi- :ie trucker orliiho l with the respective stir-et. .\l is in'riingeddo preis; l designates tlie- TRACKER-nonni).

Specification of LettersiPetent.

OF KAXSAS CITY, MISSOURI.

vacuum chambers 3 in the primary vacuum chest P, the. hitter being provided with a vent 4 and connected to the pipe or tube 5 lending` to the suction bellows (not shown). The chziiiiber 3 is in communication with a diaf phrugni pneumatic 6 underneath. the double action valve 7. A tube S leads from :ihove the lower head of siiid vulve to the seconder vucu um chest S underneath und in communication with its diaphragm 9, adopted to actu :ite its vulve l0.

ll designates the ordinary secondary or power pneumatic of the bellows type, designed to iictuiitc the suspended finger or rod 12 so ris to depress the key.

The foregoing piirts nre, iis thus fair de- 70 scribed, of thc usual fornnition. In their practical operation, whenever'a port or passage l or' the trucker-boord is closed by a perforated music sheet, ii partial vueuum exists.

in the tube 2 created through the vent 4, 75

This creates cquulization of vulve 7 closing the chestI l against the iidinis- S5 sion .of :itriiosplieric iiir.

Whenever the perfoi'iited music sheet. M opens one of the. ports 1, it destroys. the eouzilizntioii, cruising the vulve 7 to-rise und udiuit :itiiiospliei'ic nir into the chest l and 90 to the tube 8. Air rushing into suid tube will manifestly raise the vulve l0, closing the upper vulve und opening the lower valve, thereby causing,r the secondary orl power pneumatic 1l to close, nir being emptied 95 through the chamber 9", the pipe 1T connectcd irtoue ond thereto, the chiiiiibei 16 rind exluiust or suction ripe 5 that is ooniiected to the pumping beillows, this exhaust beingcontrollcd by the re ulzitor 18. zi soft or uniicceritiuite( tone will be produced, itbeiiig understood that the valve 14 is lowered during this operation, the tube 2 being,l closed.

Referring now to Fig. l, wherein is illus- 105 tinted my improved trucker-boord, it will seen tluit the saune is provided, in addition to the usual poi-ls l, with n correlated scr-ies of Hence,

disposed that they will lend of the saine.

, transversely extending ports 1". The port-s1 extend at riUht aneles to the ports 1 4and are set just baci: of the ports l, the res ective ports 1a being in registry with one en of the corresponding port 1 and heilig of less width than t ie length of said ports 1, so as to leave a portion of the several portsA between every two 'of the ports 1 whereby cuttings or openings in the music sheet M may be so located as to open the portsl during the traverse of the s ieet over the tracker range, without opening the corresponding ports 1", while other cuttings or openinus in the sheet are so open any one or more of the ports laas the sheet travels lforwardly over the rim and simultaneously open the corresponding port or ports 1 at one A tracker or tube 2 leads from each one of these ports l, to the auxiliary vacuum chest A and communicates with the diaphragm 13 underneath the double valve 14, gov\erning chambers 15 and 16 that are designed ior communication with chanb ber 9 by means of the pipe 17.

1S designates a regulator of the well known type designed to control the tension by means of the valve 19.

ln describing the o )eration of the addi tional vacuum chest o my invention in con necton with the other parts, it is to be understood that the musitl sheet to be employed especialiy {oi-in ed with a set of accenting openings y (see Fig. 3) in addition to the or dinary cuttings I. So long as thtl )orts 1 and 1u in the tracker-board are closed liy the perforated music sheet. there is t-lie same partial vacuum in the channels of the chest P, as before stated, to the diaphragm t) in chest- S; hut the vacuum iii the chamber il is created through pipi 1T lo chest through chamber or chaiiirelil, through the regulator 18 or the passage 20, and through the pipe 5 "to the pu'm ing bellows. 'lhe diilerenoe in pressure ietn'ecn the chamber D" and the Vbe lows 1S of the regulator is controlled hy the slide valve 1S), and the tension in the chamber is thus regulated. 'lhere is strong suction or expression through the channels of the chest l to the valve t), and through the pipe 5 to chamber 15, giving the valve in the vacuum chest P positive actioii, altliough the secondary or pon-er pneumatic 1l is under regnlated tension and its dynamic action is thereby weakened orsubdued to give a soft expression or tone.

'henever the peiforation in the music -sheet opens` a port ll in the tracker board,

ici-ic pressure rushes through the atinosp tube 2, destroying the. et ualization under the diaphragm 13, liflils: l ie valve 14, closing the chamber 1G, and opening chamber 15, thereby switching the. tension from that in f A:semana vthe chamber 16-` (such tension being regulated by bellows 18)' to the direct unregua strong suction through the ipe 17 to the chaniberQf. This gives saidc aniberQ the same suction as under the diaphragm 9.

in the musicsheet extends over a port 1 in the traclter-bosrd, as well las a r,ort l, atmospheric pressure will rush through the tion under the diaphragm 6, raising the valve 7, and thereby admitting atmospheric pressure through the tube 8 so as to destroy thefexlauf under the dianhragm 9. The latter being then misedflifrts the valve 10,

with added force, the note thereby being ac- -cented two ports for every note, and that the upper assag'e when in use is merely to assist the ower in erfornina its function. Itv is' also to be un erstood that the up er passage 1 opens the lower sssage l.

is clainiet 'as nen.` is:

A tracker beard formed with a series of longitudinally elongated air orts and a seof the airports er the rst named series4 each of the transver'seiy elongated ports being in transverse alineinent with a rtien of the corres ending longitudinally e ongated port.

2. Ji) tracker board formed with a series of longitudinally elongated air ports and a sesaid transversely eiongated ports being less in width than the iongitudinallr elongated iorts are in length, and for the purpose .set iorth.

In testimoniP whereof l atlix my signature in presence of tiro witnesses.

HARRY P1 Elttl". [L sul 'itiiesses:

i A. li. Doa-ants.

Hion )1a-ninas.

lated tension in the chamber 1.5 and creating- 'Wiieneveig however, this saine perforation and ctie-'cts the closing of the pneumatic l1` It is to be particularly noted that there are Havin thus nescrihed the invention, what ries of transverseiv elongated airports back` tube .3 into the chest P; destroyingegualizais opened by the same p ei eration 'whichA ries of transversely elongatei air ports back 

